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1) The internal energy of a system can be changed by transferring energy as either work, heat, or a combination of both. This is true according to which law?
2) What does the 0th law of thermodynamics state? What is thermal equilibrium?
3) The law of entropy (second law of thermodynamics) states that heat flows spontaneously from warm objects to cooler ones unless work is done. Give an example of a situation that would violate the law of entropy (ex: If you dropped a bag of goldfish crackers and all the crackers somehow landed in a beautiful tower on top of each other, instead of scattered everywhere).
4) What is absolute zero and what happens to the motion of molecules as they get closer and closer to absolute zero?
Three solid spheres of lead, each of mass 9.8 kg, are located at three corners of a square with side lengths of 50 cm. determine the magnitude and direction of the acceleration of the smaller object when it is released
A typical electric hair dryer designed to operate at 120 -v house sold circuit is rated at 1500 W. What is the resistance of the Dryer?
A plate carries a charge of -4 ?C, while a rod carries a charge of 2.50 ?C. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?
A sky diver jumps out of a plane and falls freely for 7.8 seconds before opening the parachute. What is the sky diver's speed when the parachute opens
a) Calculate the wavelength of the laser. b) Find the distance between the first dark line and the center bright line. c) Find the intensity of the light 30 mm above the central bright line
You throw a rock vertically upward with an initial speed of 19.9 m/s. How much time does it take for the rock to hit the ground
q1. a 55 year old woman who is complaining of intermittent flushing itching and heartburn for several months. mega
The upper plate is charged positive and the lower plate is negative. What is the type of charge on the sphere? And what is the electric field intensity?
when it is very far from the asteroid it will be traveling with speed 187 m/s. We have a large and powerful spring whose stiffness is 3.0 105 N/m. Explain how much must we compress the spring?
Show that the one-mode approximation results in the frequency equation.
A small plastic ball of mass 9.34×10-3 kg and charge +0.144C are suspended from an insulating thread and hangs among the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0o with respect to the..
A 6.250 keV x-ray photon strikes a carbon atom and is scattered with a Compton scattering with one of the carbon’s electrons. The energy of the scattered photon is measured to be 6.175 keV. What is the wavelength of the scattered photon? During what ..
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